Improvement in the constbtjctiof of tan-vats



.l @uitrit ftons, @fitte Leiters Patent N'o..74,540,' dated .Fedra-ary 18,! 1868.v

VIMPnovnrmNr In run eorsrnuerronor TAN-vars.

` @lgetlphule referrer tu in tipa maar patent mit nmtingyrrt nf tigt same.

TO ALL WHOM IT MAY CONCERN:

Be ituknown that I, JOSEPH HUBEn, of the city of Buffalo, county of Erie, and State of New York, have invented a certain new and useful Improvement in the Construction'of Tan-Vats; and-I do hereby declare that the following is a full, clear, and* exact description thereof, reference being had 'to the accompanying drawings, making a. part of this specification, in whieh Figure .I is a vertical section on line X Y, Fig. II, and

Figure II is a.A plan view of my improved tan-vate. l 1

The nature4 of this invention consists in constructing tun-rats of rough strips ofboard or plank, laid one upon the other, and nailed together with interposed packings oi' coal-tar and felt between every'two strips, so

as to produce a tight connection ofthe same, and thereby forming water-tight receptacles for tanning purposes, as hereafter described. i l

Like letters designate corresponding parts in both'gures. f

Inthe drawings, A represents the bottom, constructed in any suitable manner, of .four vats, B EB B; G C are the outer or side walls,`and D D two partitions, intersecting each other at right angles, forming the four compartments.' These walls and partitions are formed of strips ofrboa'rd or plank, in avrough state, arranged one above the other, ivi-than intervening strip, m, 'of felt, roughly eoate'd on bothsides with pitch or equivalent impervious substances. The strip of board H, forming the top of the longitudinal partition, has a cylindrical bore and-side openings, it', one for eachvat, which are closed by any suitable device, and opened, when desired, so that the liquor, which is led from the leaches tothe vats through the here of the strip I-I, may be drawn into any vat desired.A VA dischargefopeningilfg, is made in the bottom of each vat, through which the liquor may be drawn oli" by releasing the Stoppers or plugs I. A coating of coal-tar isiirstapplied tothe betteln of the ratsI at the places where the walls and partitions are to be built up, then a strip of'felt islaid` on theeoal-tar coating,` and a rough strip'of board or plank, of whichthe vats are constructed, and whose under side is'also coated with coal-tar, is laid on to the felt strip, and firmly nailed to the bottom, the former-perfectly filling the space between the bottom and the rough strip of board, thereby securing a perfectly ti'ght eonn'eetion'lofhoth. After that the same operation i-s repeated, that is, the rough strip of plank is coated withcoal-tar at the` top, an felt strip i-s laid upon it, and another strip of board, with the tarred under' side laid upon the felt strip, and nailed to the lower strip of board; then the next strip ot' board is applied in the saine manner, and soon until the walls andpartitions fornning the tan-vats reach the required height. It' the strpsloflwood should not be long enough to answer the sizeof the vats, but require every layer to be composed of different strips, a tight connection of the latter, at their contiguous ends, is procured by the same .packing as represented at ml', Fig. II.- Thebottom of the irats enh be made also of rough strips of board or plank, laid down sidel by side, with the same packing interposed. l i l It is evident that my improvement furnishes a very cheap and expedient mode of constructing tan-vats, as the-strips of board or plank used in the construction of them do"not requireany finishing, but are used in the very rough state they are in when cut, thereby saving n goed deal of labor and dispensing` with-'the skill required for eonstructngtan-vats in the ordinary manner. The vats are strong, durable, and perfectly tight.

What I claim as my invention, and desire to secure by Letters Patent, is- K A tan-vat, constructed of strips of board or plank laid up with eoal-tar andfelt-.paeking between the strips,

and nailed together, in the manner and for the purpose substantially as described.

JOSEPH HUBER.

Witnesses: i

JAY HYATT, N. H. BECKER. 

